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平台:
JSTOR Arts and Sciences I
(Available from 1920/01/01 volume: 1 issue: 1. Most recent 3 year(s) not available.)
JSTOR Life Sciences Collection
(Available from 1920/01/01 volume: 1 issue: 1. Most recent 3 year(s) not available.)
ProQuest Agricultural & Environmental Science Database
(Available from 1991/08/01 volume: 72 issue: 4 until 2000/12/31 volume: 81 issue: 12.)
ProQuest Biological Science Database
(Available from 1991/08/01 volume: 72 issue: 4 until 2000/12/31 volume: 81 issue: 12.)
ProQuest Earth, Atmospheric & Aquatic Science Database
(Available from 1991/08/01 volume: 72 issue: 4 until 2000/12/31 volume: 81 issue: 12.)
ProQuest SciTech Premium Collection
(Available from 1991/08/01 volume: 72 issue: 4 until 2000/12/31 volume: 81 issue: 12.)
Wiley Online Library
(Available from 1997 volume: 78 issue: 1.)